Repaired tire



C. W.`YELM.

REPAIRED TIRE. APPL1cAT1oNf1LED MAR.11.1920.

Patented Sept. 7 1920. 4

UN'ETE* STATES CHARLES W. YELM,0F DENVER, COLORADO, ASSIGNOR TO THE GATES RUBBER COM- @raar asics.

PATTY, 0F DENVER, COLORADO, A CORPORATION 0F COLORADO.

REPAIRED TIRE.

To all 'whom it may concern:

Be it known that I, CHARLES W. YELM,

a, citizen of the United States, residing at the city and county of Denver and State Vof Colorado, have invented certain new and' useful Improvements in Repaired Tires;- and l do declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the'art to which it appertains to make and,us ethe same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form l a part of this specific-ation.

This invention relates to tires which comprise worn casings to which there have been applied repair tires, or. so -called halfsoles.

. The object of .thel invention is to provide such a structure in which the repair tire or half-sole is securely applied to the worn casing by ltheemployment of a bonding layer of raw gum o'r 'rubberized compound between the twoV members, and without in the first instance subjecting the raw gum to vulcanizatiom the/ latter, however, being of such composition that it will be gradually generated incident vulcanized b the heatto the use o the tire.'

After the outer surface of the worn cas ing is 'bulied o f and'smoothed down, the Vraw gum is applied and the repair tire finally put in place indirect contact with lthe gum;v vAn 'important'jadvantage' of this construction is that by reason of the fact that the bonding Elayer of gum is not vulcanized' originally, the carcass and repair tire es-` cape injury which would otherwise result due to over-vulcanization, whereas the low heat generated during use andv incident t creto, and which is sufficient to vulcanize the raw gum, does notinjuriously aect the other parts of the tire.

Furthermore, where a repair tire has ybeen applied to the carcass of an old casing in the usual manner,- as by the employment of a thin lcoat of rubber-cementor compound,

it has been found that theedeformationof. the tire due to contact"w ith the road during "use, has a' tendency to loosentherepair tire because the cement bondv between the repair i. tire and the carcass is: so thin that the hold- 'ingcapacity of the 'bond' isf'insuicient to. prevent separation. 'z- Under` these .circum- Specication of Letters Patent.

inal tread of the casing.

stances, as soon as' the bond is broken betweenthe two parts, a rubbing or abrading action results which soon wears the tire to such an* extent that blow-outs result.

The present' improvementis designed to completely obviate diliiculties of this character, and as above stated comprises the em'- ployment'of a layer of raw gum or rubberized compound of. substantial thickness between the adjacent surfaces of the worn cas- 'ing and the repairtire, this raw gum or *rubber compound being of such composition )Patented Sept. 7, i920. Applicationled March 11, 1920. Serial No. 365,030. f i

as to secure the two members in proper cooperative relation, and of such thickness as to permit the deformation or deiection of the outer. member or repair tire incident to road \work without loosening the bond between the two members.

The layer of raw gum or rubberized com pound forms a cushion between the two .members of suiicient magnitude to permit the said deformation or deflection without interfering in any way with the security of the vbond resulting from the use of said raw .gum- .or rubber compound positioned as above explained. This is true Vindependently vof the vulcanizing feature.

forth the present invention,

Figure'l is a cross section illustrating the In the accompanying drawings, which set I 'worn casing after being bul'ed down ready to receivethe repair tireV or half-Sole.

Fig. 2 is a cross section of said repair tire.v

Fig. 3 is a cross section of the casing showing the layer of raw gum or rubberized compound applied preparatory to positioning the repair tire thereon.

Fig.l l is a cross section 'of the completed structure, showing the carcass, "repair tire, and the interposed cushioning and bonding layer of raw gum or rubberized compound.

ln thedrawings, the carcass or casing of.

a Worn tire, after being buled down, is indicated at. 5. .The repair tire or half-sole to be applied lover the carcass 5 is shown at 6, this repair tire 4taking-the place of the orig- "substantial thicknessis applied preferably `to the outer surfac'efof'the'c rcass 5.v It is .withinl the invention 'to apply this vlayer 7.

Ito the inner surfaceofjtherepair tire 6,' ali lthough this couldnot .be done so easily. The cushioning and bonding layer 7 is composed.

of raw gum or rubberized compound, which preferably covers the entire adjacent surfaces of the two members 5 and 6 down to the heads 8 of the casing. This compound is of such composition that it will form a vsuitable bond between the two members and form a cushion therebetween which will permit of the deformation of the tire due to road work without loosening or .interfering with the proper security or holding capacity of the said bond.

After the layer 7 of raw gum or rubberized compound is applied to the outer surface of the carcass 5, the repair tire 6 is put in place in the usual manner, the extremities of the side strips ormembers of the repair tire 6 being carried around the beads 8 of a clencher tire in such a manner as to be properly engaged and held by the rim.

In a construction of this class, the heat generated in the tire during use on the road will serve to Vulcanize or properly cure the original raw gum or rubberized compound to such an extent that the bond or union between the two parts will become more secure during the use of the tire. rlhe gum or compoundof which the layer '7 is composed is of such character that it will set subsequent to application of the repair tire without the employment of artificial heat. The

consistency of this gum or compound is such when applied to the tire, that before it has become cured or set it distributes itself over the tire or used casing in such a manner as to fill up any uneven places which might be present.

TheA process of forming a tire of this character is set forth and claimed in my appli: cation filed December 8th, 1919, Serial No. 343,27 3. Y y

l claim: y,

1. In combination, a worn casing, a repair tire appliwd thereto, and a layer of rubberized compound establishing a bond therebetween, said layer of compound being unvulcanized prior to road use, and having such character and thickness as to form a cushioning bond between the .members which bondis maintained during use. A

2. ln combination, a worn casing, a repair tire applied thereto, and a layer of rubberized compound establishing a bond therebetween, said layer being unvulcanized before putting into use, and of such consistency that it fills any unevenness in the adjacent faces of the parts and of such character and thickness that the bond is maintained during road use.

CHARLES W. Y LM.

' ln testimony whereof I afiXI my si nature. i 

